Quantum Spin Effect and Short-Range Order above the Curie Temperature
Other Condensed Matter
2007-05-23 v1
Abstract
Using quantum Heisenberg model calculations with Green's function technique generalized for arbitrary spins, we found that for a system of small spins the quantum spin effects significantly contribute to the magnetic short-range order and strongly affect physical properties of magnets. The spin dynamics investigation confirms that these quantum spin effects favor the persistence of propagating spin-wave excitations above the Curie temperature. Our investigation suggests a reconsideration of prevailing point of view on finite temperature magnetism to include quantum effects and the magnetic short-range order.
Keywords
Cite
@article{arxiv.cond-mat/0508781,
title = {Quantum Spin Effect and Short-Range Order above the Curie Temperature},
author = {R. Y. Gu and V. P. Antropov},
journal= {arXiv preprint arXiv:cond-mat/0508781},
year = {2007}
}
Comments
4 pages, 3 figures